Supercell over Laramie
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Wyoming Snow Precipitation Update

United States Natural Resources Water and Climate Center Department of Conservation Portland, Oregon Agriculture Service S N O W - P R E C I P I T A T I O N U P D A T E Based on Mountain Data from NRCS SNOTEL Sites As of SATURDAY: APRIL 24 , 2004 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 5.9 14.3 41 20.4 23.8 86 COTTONWOOD CREEK 7600 14.1 21.6 65 22.1 30.9 72 GRANITE CREEK 6770 8.3 14.6 57 18.0 21.9 82 GRASSY LAKE 7265 26.3 35.0 75 35.2 39.9 88 GROS VENTRE SUMMIT 8750 8.2 13.9 59 11.1 14.8 75 LEWIS LAKE DIVIDE 7850 25.0 35.5 70 32.5 40.6 80 PHILLIPS BENCH 8200 20.5 29.9 69 25.8 32.2 80 SALT RIVER SUMMIT 7600 6.7 12.3 54 15.1 21.0 72 SNAKE RIVER STATION 6920 5.9 14.5 41 19.7 24.8 79 SPRING CREEK DIVIDE 9000 21.8 28.6 76 21.5 29.4 73 THUMB DIVIDE 7980 8.5 16.6 51 17.8 21.3 84 TOGWOTEE PASS 9580 20.1 27.4 73 21.0 28.0 75 TWO OCEAN PLATEAU 9240 24.9 31.3 80 23.7 31.1 76 WILLOW CREEK 8450 19.5 31.2 62 31.8 36.5 87 ----- ----- Basin wide percent of average 66 80 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 20.1 25.7 78 20.2 22.8 89 BLACK BEAR 8170 37.7 40.3 94 39.6 44.7 89 CANYON 8090 8.2 12.4 66 13.9 17.2 81 FISHER CREEK 9100 28.9 37.4 77 30.5 40.7 75 MADISON PLATEAU 7750 23.2 25.0 93 25.3 29.6 85 NORTHEAST ENTRANCE 7350 .0 8.7 0 10.8 14.3 76 PARKER PEAK 9400 15.9 24.0 66 15.4 18.8 82 SYLVAN LAKE 8420 10.5 24.0 44 20.2 23.9 85 THUMB DIVIDE 7980 8.5 16.6 51 17.8 21.3 84 TWO OCEAN PLATEAU 9240 24.9 31.3 80 23.7 31.1 76 WHISKEY CREEK 6800 14.2 16.3 87 22.0 23.5 94 WHITE MILL 8700 19.4 26.2 74 21.2 30.3 70 WOLVERINE 7650 .2 8.9 2 9.9 14.7 67 ----- ----- Basin wide percent of average 71 81 WIND RIVER BURROUGHS CREEK 8750 12.5 14.3 87 14.2 18.6 76 COLD SPRINGS 9630 1.1 5.8 19 10.0 13.2 76 DEER PARK 9700 17.8 17.9 99 22.0 25.9 85 HOBBS PARK 10100 15.8 17.5 90 16.0 16.0 100 LITTLE WARM 9370 6.7 11.7 57 11.0 16.0 69 SOUTH PASS 9040 16.8 17.9 94 18.8 21.7 87 ST. LAWRENCE ALT 8620 3.8 6.6 58 9.7 11.4 85 TOGWOTEE PASS 9580 20.1 27.4 73 21.0 28.0 75 TOWNSEND CREEK 8700 10.4 9.4 111 14.5 14.6 99 ----- ----- Basin wide percent of average 82 83 BIGHORN BASIN BALD MTN. 9380 19.2 22.9 84 17.3 20.4 85 BEAR TRAP MEADOW 8200 .0 3.5 0 7.2 10.3 70 BLACKWATER 9780 18.6 28.0 66 18.9 23.8 79 BONE SPRINGS DIV 9350 16.5 18.0 92 17.7 17.5 101 EVENING STAR 9200 19.6 32.7 60 25.9 28.9 90 GRAVE SPRINGS 8550 8.3 10.9 76 10.7 12.3 87 KIRWIN 9550 7.5 12.7 59 9.8 13.5 73 MARQUETTE 8760 7.7 11.0 70 9.9 12.8 77 MIDDLE POWDER 7760 8.3 14.2 58 8.0 15.0 53 OWL CREEK 8975 2.9 4.5 64 6.3 7.7 82 POWDER RIVER PASS 9480 6.7 11.2 60 12.5 15.0 83 SHELL CREEK 9580 14.7 16.5 89 13.9 16.0 87 SYLVAN LAKE 8420 10.5 24.0 44 20.2 23.9 85 SYLVAN ROAD 7120 2.4 9.8 24 14.1 19.9 71 TIMBER CREEK 7950 3.6 5.2 69 8.0 9.8 82 YOUNTS PEAK 8350 8.7 18.1 48 11.8 18.2 65 ----- ----- Basin wide percent of average 64 80 SHOSHONE RIVER BLACKWATER 9780 18.6 28.0 66 18.9 23.8 79 EVENING STAR 9200 19.6 32.7 60 25.9 28.9 90 KIRWIN 9550 7.5 12.7 59 9.8 13.5 73 MARQUETTE 8760 7.7 11.0 70 9.9 12.8 77 SYLVAN LAKE 8420 10.5 24.0 44 20.2 23.9 85 SYLVAN ROAD 7120 2.4 9.8 24 14.1 19.9 71 YOUNTS PEAK 8350 8.7 18.1 48 11.8 18.2 65 ----- ----- Basin wide percent of average 55 78 POWDER-TONGUE BEAR TRAP MEADOW 8200 .0 3.5 0 7.2 10.3 70 BIG GOOSE 7990 6.0 11.9 50 10.8 11.9 91 BONE SPRINGS DIV 9350 16.5 18.0 92 17.7 17.5 101 BURGESS JUNCTION 7880 9.7 13.3 73 11.4 14.7 78 CLOUD PEAK RESERVOIR 9860 13.6 15.8 86 13.7 16.1 85 DOME LAKE 8880 8.6 13.7 63 13.2 16.0 82 GRAVE SPRINGS 8550 8.3 10.9 76 10.7 12.3 87 HANSEN SAWMILL 8360 .6 5.5 11 9.2 10.3 89 MIDDLE POWDER 7760 8.3 14.2 58 8.0 15.0 53 POWDER RIVER PASS 9480 6.7 11.2 60 12.5 15.0 83 SUCKER CREEK 8880 9.6 13.3 72 14.6 16.5 88 TIE CREEK 6870 .1 4.5 2 11.3 12.7 89 ----- ----- Basin wide percent of average 65 83 BELLE FOURCHE BLIND PARK 6890 .3 5.6 5 10.5 13.5 78 COLE CANYON 5910 .0 5.5 0 7.4 -M * NORTH RAPID CREEK 6130 .0 6.0 0 8.3 10.7 78 ----- ----- Basin wide percent of average 2 78 UPPER N. PLATTE RIVER COLUMBINE 9160 10.7 22.6 47 25.7 28.3 91 DIVIDE PEAK 8860 14.6 20.0 73 20.9 23.5 89 ELK RIVER 8700 7.3 17.0 43 21.5 22.2 97 JOE WRIGHT 10120 17.0 24.4 70 22.9 28.9 79 NORTH FRENCH CREEK 10130 22.2 33.7 66 23.4 28.6 82 OLD BATTLE 9920 32.7 35.9 91 36.7 38.7 95 SAGE CREEK BASIN 7850 .0 11.6 0 14.3 13.6 105 SOUTH BRUSH CREEK 8440 .9 12.1 7 13.4 19.2 70 TOWER 10500 40.0 51.0 78 42.0 43.6 96 WEBBER SPRINGS 9250 18.1 25.5 71 26.6 30.1 88 WILLOW CREEK PASS 9540 12.8 13.9 92 11.5 15.0 77 ----- ----- Basin wide percent of average 66 89 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10220 17.4 27.5 63 19.3 25.9 75 CASPER MTN. 7850 8.1 17.0 48 11.6 18.3 63 DEADMAN HILL 10220 15.8 19.1 83 17.9 20.1 89 DEER PARK 9700 17.8 17.9 99 22.0 25.9 85 LAPRELE CREEK 8375 .0 8.5 0 9.9 15.6 63 RENO HILL 8500 9.5 15.2 62 13.4 19.0 71 ROACH 9700 15.3 18.5 83 19.7 21.5 92 SAND LAKE 10050 24.5 36.1 68 24.9 28.1 89 SOUTH PASS 9040 16.8 17.9 94 18.8 21.7 87 WINDY PEAK 7900 .5 6.3 8 7.9 12.8 62 ----- ----- Basin wide percent of average 68 79 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .0 6.4 0 15.2 18.0 84 DIVIDE PEAK 8860 14.6 20.0 73 20.9 23.5 89 OLD BATTLE 9920 32.7 35.9 91 36.7 38.7 95 SANDSTONE RS 8150 4.1 11.2 37 19.8 21.2 93 WHISKEY PARK 8950 21.3 30.6 70 26.7 32.6 82 ----- ----- Basin wide percent of average 70 89 UPPER GREEN RIVER BIG SANDY OPENING 9080 12.8 14.3 90 14.0 15.3 92 BLIND BULL SUM 8900 20.7 28.3 73 17.6 24.6 72 EAST RIM DIVIDE 7930 7.8 13.5 58 10.9 13.5 81 ELKHART PARK G.S. 9400 9.2 13.3 69 12.4 15.4 81 GROS VENTRE SUMMIT 8750 8.2 13.9 59 11.1 14.8 75 KENDALL R.S. 7740 3.0 11.6 26 13.3 16.2 82 LOOMIS PARK 8240 8.4 15.5 54 16.7 19.4 86 NEW FORK LAKE 8340 4.2 9.7 43 9.6 12.9 74 SNIDER BASIN 8060 8.3 13.6 61 12.5 18.0 69 SPRING CREEK DIVIDE 9000 21.8 28.6 76 21.5 29.4 73 TRIPLE PEAK 8500 12.9 24.7 52 23.0 27.8 83 ----- ----- Basin wide percent of average 63 78 LOWER GREEN RIVER HAMS FORK 7840 .2 7.8 3 10.7 14.1 76 HEWINTA 9500 4.6 10.6 43 13.6 17.1 80 HICKERSON PARK 9100 -M 6.8 * 10.9 9.7 112 HOLE-IN-ROCK 9150 .3 5.8 5 9.2 9.2 100 INDIAN CREEK 9425 22.1 28.9 76 20.3 28.6 71 KELLEY R.S. 8180 9.1 15.5 59 16.2 22.9 71 STEEL CREEK PARK 10100 15.2 18.0 84 16.0 19.3 83 ----- ----- Basin wide percent of average 59 80 UPPER BEAR RIVER BUG LAKE 7950 11.3 19.6 58 18.1 21.7 83 HAYDEN FORK 9100 .5 14.5 3 18.0 24.2 74 KELLEY R.S. 8180 9.1 15.5 59 16.2 22.9 71 LILY LAKE 9050 1.1 12.6 9 14.5 20.3 71 MONTE CRISTO 8960 20.7 29.3 71 26.4 29.2 90 SALT RIVER SUMMIT 7600 6.7 12.3 54 15.1 21.0 72 TRIAL LAKE 9960 17.1 26.5 65 21.7 28.4 76 ----- ----- Basin wide percent of average 51 78 ----------------------------------------------------------------------------- -M = Missing data * = Data may not provide a valid measure of conditions. Units = inches for the Current and Average Snow Water Equivalent and Total Precipitation values If the Basin wide percent of average value is flagged as potentially invalid, care should be taken to evaluate if the value is representative of conditions in the basin. The SNOW WATER EQUIVALENT Percent of Average represents the snow water equivalent found at selected SNOTEL sites in or near the basin compared to the average value for those sites on this day. The TOTAL PRECIPITATION Percent of Average represents the total precipitation (beginning October 1st) found at selected SNOTEL sites in or near the basin compared to the average value for those sites on this day. Contact your state water supply staff for assistance. Reference period for average conditions is 1971-2000. Provisional data, subject to revision. ---------------------------------------------------------------------------- -M = Missing data * = Data may not provide a valid measure of conditions. Units = inches for the Current and Normal Snow Water Equivalent and Total Precipitation values If the Basin Index (%) value is flagged as potentially invalid, care should be taken to evaluate if the value is representative of conditions in the basin. The SNOW WATER EQUIVALENT Percent of Median represents the snow water equivalent found at selected SNOTEL sites in or near the basin compared to the Median value for those sites on this day. The TOTAL PRECIPITATION Percent of Average represents the total precipitation (beginning October 1st) found at selected SNOTEL sites in or near the basin compared to the Average value for those sites on this day. Contact your state water supply staff for assistance. Medians and averages are calculated for the period 1981-2010. Provisional data, subject to revision. * Site -- Either: (a) the current value is missing; (b) the median or average for the day is not available or is zero; or (c) for snow water equivalent, the median for the day is less than 10% of the maximum median value for the year. * Basin - More than half of the sites within the basin are flagged with *, preventing the calculation of a meaningful basin index. The basin index is calculated as the sum of the valid current values divided by the sum of the corresponding medians (for snow water equivalent) or averages (for precipitation) and the resulting fraction multiplied by 100.